37 'i Sir seorge shuckeurgh on the Variation 
intermediate term, and confequently from the mean 
of fix to examine all the fifteen obfervations. Thus, on 
a comparifon of N° I. and 2. with N° 14*- and 15. the 
mean motion of the boiling point in that interval for one 
inch of the barometer (viz. when the mercury Hands 
at 28,886 inches) is = x°,743; according to Mr. de 
luc this is l°,6s. By a fimilar comparifon of N° 1. and 
2. with N° 6. and 7. the mean motion of the boiling 
point in that interval (viz. at 27,908 inches) for one 
inch is =- i°,779; by Mr. de luc = i°,73. And, laftly, 
comparing the mean of N° 6. and 7 . with the mean of 
N° 14, and 15. the mean motion of the boiling point in 
this interval (viz. at 29,925 inches) for one inch is = 
i°,yog ; by Mr. de luc = x°,59. It Ihould follow then,, 
that, within the limits of my experiments, the alteration 
or motion of the boiling point is greater (e> by than 
from that gentleman’s obfervations, that the heat of 
boiling water is not directly in the Ample ratio of the 
height of the barometer, nor yet is the progreflion fo 
rapid as Mr. de luc obfer'ved it. It may be fomewhat 
fatisfadtory to fee the obfervations collated and compared. 
(e) It is true, .that my obfervations irr Savoy give this difference + x * x thofe o£ 
Mr. LE monnier equal -f T J r (Vide Rechsrches fur V At. § 964.) ; and though, 
perhaps, neither the one nor the other are intirely unexceptionable, they tend, 
however, fomething to confirm, although alone they may be Enable whoSy 
l© fupport, fuch a fappofitioru 
N* 
